955480 (http://support.microsoft.com/kb/955480/ ) Meeting requests from external senders are displayed as Busy instead of Tentative in an Exchange 2007 environment

956633 (http://support.microsoft.com/kb/956633/ ) User calendar permissions are removed after you run the Set-MailboxCalendarSettings cmdlet in an Exchange Server 2007 environment

957640 (http://support.microsoft.com/kb/957640/ ) The "test-*" command fails when you run it on a site that contains only CAS roles in an Exchange 2007 environment

958239 (http://support.microsoft.com/kb/958239/ ) Exchange Server 2007 does not generate an event log message for public folder replication messages even though a property validation exception is thrown and the replications do not occur

958881 (http://support.microsoft.com/kb/958881/ ) All HTML content in attachment files of messages is run through an HTML filter when you open or save the attachment by using Outlook Web Access (OWA)

958938 (http://support.microsoft.com/kb/958938/ ) The importance attribute of a message is lost when an Exchange 2007 user accesses a high-importance message or a low-importance message from Exchange Server 2007 by using a non-Outlook POP3 client or IMAP4 client

959510 (http://support.microsoft.com/kb/959510/ ) A meeting request that is sent from OWA causes a "553 5.0.0 Message-Id header line format error" NDR message in an Exchange Server 2007 environment

959748 (http://support.microsoft.com/kb/959748/ ) An account with the "Exchange View-Only Administrator" permission can review user mailbox contents by using an administrative application in Exchange Server 2007

960633 (http://support.microsoft.com/kb/960633/ ) The Microsoft Exchange Information Store service crashes on an Exchange Server 2007 that has the mailbox server role installed

960703 (http://support.microsoft.com/kb/960703/ ) Extended characters are replaced by question marks when you send an e-mail message that contains extended ASCII characters by using an IMAP4 client in Exchange 2007

960775 (http://support.microsoft.com/kb/960775/ ) You receive a "Message too large for this recipient" NDR that has the original message attached after you restrict the Maximum Message Send Size value in Exchange Server 2007

960869 (http://support.microsoft.com/kb/960869/ ) A queue that has multiple connections cannot enter a Retry state in Exchange Server 2007

961347 (http://support.microsoft.com/kb/961347/ ) Error message when you export an Exchange 2007 mailbox to a .pst file and a filter is defined: "Export-Mailbox : Error was found for &lt;username&gt; (&lt;SMTP address&gt;)"

961443 (http://support.microsoft.com/kb/961443/ ) Users cannot use Outlook Web Access for Exchange Server 2007 to open an address book

961524 (http://support.microsoft.com/kb/961524/ ) Some journal messages are stuck in the Submission queue in Exchange Server 2007

961606 (http://support.microsoft.com/kb/961606/ ) After you apply Rollup Update 5 for Exchange Server 2007 S961606, Outlook Web Access users find the font size of plain text messages is extremely small when they use some third-party Web browsers

961693 (http://support.microsoft.com/kb/961693/ ) Japanese (1 byte Kana) characters in the subject and display name are corrupted when you try to reply or forward task requests or calendar items in Outlook client

962235 (http://support.microsoft.com/kb/962235/ ) The date and time information for a "Follow Up" flag is missing if an Exchange 2007 user sends a message to an external recipient

966535 (http://support.microsoft.com/kb/966535/ ) Duplicate messages are sent to an external recipient if the recipient is included in multiple distribution lists in an Exchange Server 2007 environment

967038 (http://support.microsoft.com/kb/967038/ ) Many log entries are generated in Exchange Server 2007 if you turn on the Exchange log to audit the logons that do not use the primary account for shared resource mailboxes

967109 (http://support.microsoft.com/kb/967109/ ) A delegate cannot accept a meeting request for an online meeting in an Exchange Server 2007 environment

967255 (http://support.microsoft.com/kb/967255/ ) Only the tracing information of the last user is logged when you configure Exchange Server 2007 to trace multiple users at the same time

968310 (http://support.microsoft.com/kb/968310/ ) Many log entries are generated on an Exchange Server 2007 computer when you enable the Exchange log to audit user logons that do not use the primary account for their mailbox

968352 (http://support.microsoft.com/kb/968352/ ) The W3wp.exe process crashes when you use the Italian version of the spelling checker on a message in Outlook Web Access in Exchange 2007

968589 (http://support.microsoft.com/kb/968589/ ) The managed policy does not work if the ptagProvisionedFid attribute is missing in Exchange Server 2007

968745 (http://support.microsoft.com/kb/968745/ ) Incomplete tasks show in the Complete tasks view in OWA 2007 in an Exchange 2007 environment

968966 (http://support.microsoft.com/kb/968966/ ) Many log entries are generated in Exchange Server 2007 if you turn on the Exchange log to audit administrator logons that do not use the primary account for mailboxes

970687 (http://support.microsoft.com/kb/970687/ ) A search operation in Outlook does not return a correct result if there is a corrupted HTML message in the target folder in an Exchange Server 2007 environment

Enhanced Auditing – New Exchange auditing events and audit log repository enable Exchange administrators to more easily audit the activities occurring on their Exchange servers. It allows the right balance of granularity, performance, and easy access to audited events via a dedicated audit log repository. This simplifies the auditing process and makes review of audited events easier by segregating audited events in a dedicated location.

Exchange Volume Snapshot Backup Functionality – A new backup plug-in has been added to the product that will enable customers to create Exchange backups when a backup is invoked through the Windows Server 2008 Backup tool. Exchange Server 2007 didn’t have this capability on Windows Server 2008 and additional solutions were required to perform this task.

Dynamic Active Directory Schema Update and Validation – The dynamic AD schema update and validation feature allows for future schema updates to be dynamic deployed as well as proactively preventing conflicts whenever a new property is added to the AD schema. Once this capability is deployed it will enable easier management of future schema updates and will prevent support issues when adding properties that don’t exist in the AD schema.

Public Folder Quota Management – SP2 enables a consistent way to manage quotas by improving the current PowerShell cmdlets to perform quota management tasks.

Centralized Organizational Settings – SP2 introduces new PowerShell option that enable centralized management of many of the Exchange organization settings.

Named Properties cmdlets – SP2 enables Exchange administrators to monitor their named property usage per database.